RTF is a global modification that replaces all towns in the game.

https://yadi.sk/d/ME9ch1AwpwXpP
now you can try out the Gnolls in the game! They replace the Goblins.

Added 1 hour 40 minutes ago

Yes, in principle, you can!

if one of the upgrades lives on the islands, then Hydras can also be present in the faction, or there is another idea: we chose between a swamp and a desert, and if the lizards live in the jungle (on the islands), then the landscape can be hybrid, the coast will be a desert or a beach with palm trees, and in the depths there will be a swamp. I also had the idea to turn the desert into a wasteland (like the undead territory in Heroes 6), and make the swamp green and populate it with lizards.